TY - JOUR A1 - Karuwanarint, Piyaporn A1 - Phonrat, Benjaluck A1 - Tungtrongchitr, Anchalee A1 - Suriyaprom, Kanjana A1 - Chuengsamarn, Somlak A1 - Schweigert, Florian J. A1 - Tungtrongchitr, Rungsunn T1 - Vitamin D-binding protein and its polymorphisms as a predictor for metabolic syndrome JF - Biomarkers in medicine N2 - Aim: To investigate the relationship of vitamin D-binding protein (GC) and genetic variation of GC (rs4588, rs7041 and rs2282679) with metabolic syndrome (MetS) in the Thai population. Materials & methods: GCglobulin concentrations were measured by quantitative western blot analysis in 401 adults. All participants were genotyped using TaqMan allelic discrimination assays. Results: GC-globulin levels were significatly lower in MetS subjects than in control subjects, in which significant negative correlations of GC-globulin levels with systolic blood pressure, glucose and age were found. Male participants who carried the GT genotype for rs4588 showed an increased risk of MetS compared with the GG wild-type (odds ratio: 3.25; p = 0.004). Conclusion: GC-globulin concentrations and variation in GC rs4588 were supported as a risk factor for MetS in Thais. KW - GC gene KW - GC-globulin KW - metabolic syndrome KW - polymorphism KW - Thai population KW - vitamin D-binding protein Y1 - 2018 U6 - https://doi.org/10.2217/bmm-2018-0029 SN - 1752-0363 SN - 1752-0371 VL - 12 IS - 5 SP - 465 EP - 473 PB - Future Medicine CY - London ER - TY - CHAP A1 - Funkeu, A. D. M. A1 - Gouado, I. A1 - Schweigert, Florian J. A1 - Tchounguep, F. T1 - Serum response to a single dose of dietary carotenoids from steamed, fried and steam-dried squashes pulp (Cucurbita spp) T2 - Annals of nutrition & metabolism : journal of nutrition, metabolic diseases and dietetics ; an official journal of International Union of Nutritional Sciences (IUNS) KW - Squashes pulp KW - steamed KW - fried KW - steam-dried KW - carotenoids bioavailability Y1 - 2013 SN - 0250-6807 SN - 1421-9697 VL - 63 IS - 3 SP - 1501 EP - 1501 PB - Karger CY - Basel ER - TY - JOUR A1 - Henze, Andrea A1 - Raila, Jens A1 - Scholze, Alexandra A1 - Zidek, Walter A1 - Tepel, Martin A1 - Schweigert, Florian J. T1 - Does N-Acetylcysteine modulate post-translational modifications of transthyretin in hemodialysis patients? JF - Antioxidants & redox signaling N2 - It is assumed that effects of the thiol antioxidant N-acetylcysteine (NAC) are mediated by interaction with protein-associated cysteine residues, however, information on protein level in vivo are missing. Therefore, we analyzed NAC-induced modifications of the protein transthyretin (TTR) in plasma of hemodialysis patients in a randomized, placebo-controlled study. TTR was selected due to its low molecular weight and the free cysteine residue in the polypeptide chain, which is known to be extensively modified by formation of mixed disulfides. The intravenous application of NAC during a hemodialysis session resulted in a substantial increase of native TTR from median 15% (range 8.8%-30%) to median 40% (37-50) and reduction of S-cysteinylated TTR [51% (44-60) vs. 6.6% (2.4-10)]. Additionally the pronounced formation of a TTR-NAC adduct was detected. However, all these modifications seemed to be reversible. Additionally, in vitro incubation of plasma with NAC confirmed the in vivo results and indicated that changes in post-translational modification pattern of TTR were a function of NAC concentration. Based on these observations and the essential metabolic and biochemical role of protein-associated cysteine residues we hypothesize that the interaction of NAC with proteins may explain altered protein functions due to modification of cysteine residues. Antioxid. Redox Signal. 19, 1166-1172. Y1 - 2013 U6 - https://doi.org/10.1089/ars.2012.5125 SN - 1523-0864 VL - 19 IS - 11 SP - 1166 EP - 1172 PB - Liebert CY - New Rochelle ER - TY - CHAP A1 - Schweigert, Florian J. A1 - Raila, Jens A1 - Mothes, Ralf A1 - Frey, S. T1 - Point of care measurements of Vitamin A in blood and breast milk for low resource settings T2 - Annals of nutrition & metabolism : journal of nutrition, metabolic diseases and dietetics ; an official journal of International Union of Nutritional Sciences (IUNS) KW - Blood KW - Milk KW - Point of Care Assay and Vitamin A Y1 - 2011 SN - 0250-6807 VL - 58 IS - 2 SP - 382 EP - 382 PB - Karger CY - Basel ER -